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DOI: https://doi.org/10.15407/techned2019.06.018


Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Sciences of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 6, 2019 (November/December)
Pages 18 - 24

O.N. Petrishchev2*, K.L. Nozdrachova1**, G.M. Suchkov1***, R.P. Mygushchenko1****, O.Yu. Kropachek1*****, S.Yu. Plesnetsov1******
1- National Technical University Kharkiv Polytechnic Institute,
2, Kirpichova str., Kharkiv, 61002, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
2- National Technical University of Ukraine Igor Sikorsky Kyiv Polytechnic Institute,
pr. Peremohy, 37, Kyiv, 03056, Ukraine,
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* ORCID ID : http://orcid.org/0000-0003-2984-1340
** ORCID ID : http://orcid.org/0000-0002-1996-2301
*** ORCID ID : http://orcid.org/0000-0002-1805-0466
**** ORCID ID : http://orcid.org/0000-0002-3287-9772
***** ORCID ID : http://orcid.org/0000-0001-5899-0252
****** ORCID ID : http://orcid.org/0000-0001-8428-5426


Closed solutions of electrostatic and electrodynamics problems are formed in metals for a piecewise-homogeneous medium, where half-space is filled with metal of finite values having electrical conductivity and magnetic permeability being implemented within the framework of a mathematical model for capacitive type sensor when converting electrical energy into high-frequency mechanical (ultrasonic). It is shown that a disk transducer of a capacitive type excites forces acting normally on the surface of an electrically conductive product. A quantitative assessment of Coulomb forces for the surface density is carried out. The main factors determining a disk converter sensitivity of capacitive type are stated. Capacitive transducers should be used for measuring, control and diagnostic equipment. References 10, figures 3.

Key words: mathematical modeling, ultrasonic sensor model, capacitive transducers, electric field, charge density, electrode, impulses, measurements, diagnostics.

Received: 19.04.2019
Accepted: 06.06.2019
Published: 25.10.2019


The work is funded by the authors

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